24小时热门版块排行榜    

北京石油化工学院2026年研究生招生接收调剂公告
查看: 698  |  回复: 0

始终上路过

新虫 (初入文坛)

[求助] 测植物叶片硝酸还原酶活性的问题

各位大侠,我现在正在测植物叶片硝酸还原酶活性,所用的方法是活体法,NR activity was assayed in vivo by measuring NO-2 production in tissue that has been vacuum infiltrated with buffered NO-3 solutions.[31]The leaves and roots from the nonstressed and stressed seedlings were collected in the morning between 8:30 and 11:00 solar time. Circles 5mm in diameter were cut from the leaves of O. europaea. Leaves and roots of R. sphaerocarpa and roots of O. europaea were cut into 5mm sections.
Approximately 300 mg of leaf punches and 300 mg of roots from each
plant were placed into tubes containing 2mL of an incubation medium
consisting of 0.05M tris-HCl pH 7.8 and 0.25M KNO3. The tubes
were sealed and kept in the dark at 30C during 1 h. The nitrite released
into the medium was determined after incubation by treating 1mL of
the aliquots with 1mL of 1% sulphanilamide in 1M HCl and 1mL of
0.01% N-1-napthyl-ethylenediamine hydrochloride (NNEDA). After
15 min, the optical density was measured at 540nm with Beckman
spectrophotometer.
上面的这些是我在一篇SCI 文献里看到的,老师要求按这方法做,但是其中的试剂配制方法,参比溶液的设置,还有标准曲线的绘制,我都没有,而且我查了很多文献都没有具体的操作步骤。希望各位高人能够帮小弟一把!给我一些上面方法的具体操作步骤,不胜感激。[ Last edited by amisking on 2011-6-15 at 19:38 ]
回复此楼
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

智能机器人

Robot (super robot)

我们都爱小木虫

相关版块跳转 我要订阅楼主 始终上路过 的主题更新
最具人气热帖推荐 [查看全部] 作者 回/看 最后发表
[考研] 312,生物学求调剂 +3 小译同学abc 2026-03-28 3/150 2026-03-28 15:32 by 落睿可思
[考研] 0703化学 +10 妮妮ninicgb 2026-03-27 10/500 2026-03-28 14:07 by 哒哒哒呱呱呱
[考研] 291求调剂 +6 HanBeiNingZC 2026-03-24 6/300 2026-03-28 07:55 by baoball
[考研] 086502化学工程342求调剂 +6 阿姨复古不过 2026-03-27 6/300 2026-03-28 07:06 by wangy0907
[考研] 085701环境工程求调剂 +9 多久上课 2026-03-27 9/450 2026-03-28 03:58 by fmesaito
[考研] 308求调剂 +7 墨墨漠 2026-03-25 7/350 2026-03-27 14:47 by 狂炫麦当当
[考研] 求调剂 +3 刘柯@ 2026-03-24 4/200 2026-03-27 11:28 by shangxh
[考研] 一志愿北京化工大学材料与化工(085600)296求调剂 +9 稻妻小编 2026-03-26 9/450 2026-03-26 16:16 by 不吃魚的貓
[考研] 263求调剂 +6 yqdszhdap- 2026-03-22 10/500 2026-03-26 13:11 by 公瑾逍遥
[考研] 环境专硕324分求调剂推荐 +5 轩小宁—— 2026-03-26 5/250 2026-03-26 12:05 by i_cooler
[考研] 0854电子信息求调剂 324 +4 Promise-jyl 2026-03-23 4/200 2026-03-25 11:36 by Sugarlight
[考研] 318求调剂 +3 plum李子 2026-03-23 3/150 2026-03-25 09:42 by 雾散后相遇lc
[考研] 一志愿武理085500机械专业总分300求调剂 +3 an10101 2026-03-24 7/350 2026-03-25 00:00 by 山鬼0-
[考研] 调剂 +4 13853210211 2026-03-24 4/200 2026-03-24 19:44 by ms629
[有机交流] 有机合成求助 20+3 FENGSHUJEI 2026-03-23 5/250 2026-03-24 19:31 by 88817753
[考博] 26申博自荐 +3 whh869393 2026-03-24 3/150 2026-03-24 09:55 by 21018060
[考研] 341求调剂(一志愿湖南大学070300) +5 番茄头--- 2026-03-22 6/300 2026-03-23 23:45 by Txy@872106
[考研] 328求调剂 +4 LHHL66 2026-03-23 4/200 2026-03-23 14:55 by lbsjt
[考研] 280分求调剂 一志愿085802 +4 PUMPT 2026-03-22 7/350 2026-03-22 22:13 by 星空星月
[考研] 求调剂院校信息 +6 CX 330 2026-03-21 6/300 2026-03-22 15:25 by 无懈可击111
信息提示
请填处理意见